FI892082A - DIGITALISK MODULATOR. - Google Patents
DIGITALISK MODULATOR. Download PDFInfo
- Publication number
- FI892082A FI892082A FI892082A FI892082A FI892082A FI 892082 A FI892082 A FI 892082A FI 892082 A FI892082 A FI 892082A FI 892082 A FI892082 A FI 892082A FI 892082 A FI892082 A FI 892082A
- Authority
- FI
- Finland
- Prior art keywords
- digitalisk
- modulator
- digitalisk modulator
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0975—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation in the phase locked loop at components other than the divider, the voltage controlled oscillator or the reference clock
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
- H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
- H03C3/0933—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop using fractional frequency division in the feedback loop of the phase locked loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
- H03L7/1976—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
- H03L7/1978—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider using a cycle or pulse removing circuit
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE8800516A BE1001969A6 (en) | 1988-05-06 | 1988-05-06 | Numeric modulator |
Publications (2)
Publication Number | Publication Date |
---|---|
FI892082A0 FI892082A0 (en) | 1989-05-02 |
FI892082A true FI892082A (en) | 1989-11-07 |
Family
ID=3883400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI892082A FI892082A (en) | 1988-05-06 | 1989-05-02 | DIGITALISK MODULATOR. |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU616506B2 (en) |
BE (1) | BE1001969A6 (en) |
FI (1) | FI892082A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5495505A (en) * | 1990-12-20 | 1996-02-27 | Motorola, Inc. | Increased frequency resolution in a synthesizer |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1560233A (en) * | 1977-02-02 | 1980-01-30 | Marconi Co Ltd | Frequency synthesisers |
FR2511564A1 (en) * | 1981-08-17 | 1983-02-18 | Thomson Csf | FREQUENCY SYNTHESIZER WITH FRACTIONARY DIVISION, USED FOR DIGITAL ANGULAR MODULATION |
GB2173659B (en) * | 1985-02-06 | 1988-06-08 | Plessey Co Plc | Frequency synthesisers |
-
1988
- 1988-05-06 BE BE8800516A patent/BE1001969A6/en not_active IP Right Cessation
-
1989
- 1989-04-24 AU AU33297/89A patent/AU616506B2/en not_active Ceased
- 1989-05-02 FI FI892082A patent/FI892082A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
AU3329789A (en) | 1989-11-09 |
AU616506B2 (en) | 1991-10-31 |
FI892082A0 (en) | 1989-05-02 |
BE1001969A6 (en) | 1990-04-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA | Application withdrawn |
Owner name: ALCATEL N. V. |